/**
* Return a wiki page value that can be used for displaying this
* property, or null if no such wiki page exists (for predefined
* properties without any label).
* @return SMWWikiPageValue or null
*/
public function getWikiPageValue()
{
if (isset($this->m_wikipage)) {
return $this->m_wikipage;
}
$diWikiPage = $this->m_dataitem->getCanonicalDiWikiPage();
if ($diWikiPage !== null) {
$this->m_wikipage = DataValueFactory::getInstance()->newDataValueByItem($diWikiPage, null, $this->m_caption);
$this->m_wikipage->setOutputFormat($this->m_outformat);
$this->m_wikipage->setLinkAttributes($this->linkAttributes);
$this->m_wikipage->setOptions($this->getOptions());
$this->addError($this->m_wikipage->getErrors());
} else {
// should rarely happen ($value is only changed if the input $value really was a label for a predefined prop)
$this->m_wikipage = null;
}
return $this->m_wikipage;
}
